January Weather in Siulak, Indonesia

Last updated: August 23, 2025

In Siulak, Indonesia, the average temperature in January hovers around 21°C (70°F). Expect warm days with a minimum of 16°C (61°F) and a maximum reaching 28°C (83°F). However, be prepared for wet weather, as precipitation typically totals 224 mm (8.8 in) across 22 days, and the average humidity lingers at a muggy 83%.

January Temperature in Siulak

In January in Siulak, the average temperature is 21°C (70°F). Maximums can reach 28°C (83°F), while minimums can drop to 16°C (61°F). This climate makes it an ideal time for travelers seeking pleasant weather and comfortable outdoor activities.

January Weather in Siulak: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Siulak, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siulak, January typically has an average temperature of 21°C (70°F), with highs reaching up to 28°C (83°F) and lows dropping to around 16°C (61°F).

Data source: Temperature data for Siulak generated using information from the Copernicus Climate Change Service.

January Precipitation in Siulak

In Siulak in January, the precipitation amount is 224 mm (8.8 in) spread over 22 days.

January Precipitation Trends in Siulak

The chart displays monthly precipitation patterns in Siulak, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Siulak, January typically receives around 224 mm (8.8 inches) of precipitation spread over approximately 22 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Siulak

In Siulak in January humidity is 83%. With an average temperature of 21°C (70°F), this humidity feels like you’re enveloped in a warm, tropical embrace, making it essential to stay hydrated and take breaks during your travels.

January Average Humidity in Siulak

This chart illustrates the average monthly humidity levels in Siulak, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Siulak is approximately 83%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Siulak

In Siulak in January, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Siulak.

Maximum UV Index Levels in Siulak for January

The chart shows the monthly maximum UV Index (UVI) for Siulak in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Siulak typically reaches 16, which falls under the extreme exposure category.

Data source: Siulak January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Siulak Compares to Other Months

Weather in Siulak varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Siulak, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Siulak, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (70°F)	224 mm (8.8 inches)	83%	extreme
February Weather	21°C (70°F)	321 mm (12.6 inches)	80%	extreme
March Weather	21°C (70°F)	476 mm (18.7 inches)	79%	extreme
April Weather	21°C (71°F)	381 mm (15.0 inches)	80%	extreme
May Weather	22°C (71°F)	390 mm (15.3 inches)	78%	extreme
June Weather	21°C (70°F)	389 mm (15.3 inches)	78%	extreme
July Weather	21°C (70°F)	295 mm (11.6 inches)	79%	extreme
August Weather	21°C (70°F)	362 mm (14.2 inches)	82%	extreme
September Weather	21°C (69°F)	473 mm (18.6 inches)	84%	extreme
October Weather	21°C (69°F)	493 mm (19.4 inches)	85%	extreme
November Weather	21°C (70°F)	434 mm (17.1 inches)	84%	extreme
December Weather	21°C (70°F)	357 mm (14.1 inches)	83%	extreme